i have a real anal-retentive need for a lush, green, well-manicured front lawn.
dont know if its my nostalgia for typical 1950's era, wholesome american-ness but, its what i do. to achieve that goal i was pretty loose with the sulfate of ammonia fertilizer at the old house and when i rolled lawn at the new house, i still fertilized (once a month, on odd numbered months) - although with a better balanced turf fertilizer than sulfate of ammonia.
i used BEST brand Turf Supreme - it had relatively low n-p-k (16-6-8) numbers, as well as iron and resulted in a properly green lawn. one downside to the synthetic i was using, i couldnt use it during the hot months, otherwise i would risk burning my lawn. so by july, the lawn would be less green until late september when it was cool enough to fertilize - with no risk of burn.
i found that dr. earth had a lawn fertilizer in pellet form, which i could use. cost is roughly 50% higher than the BEST product i was using, but if it would get the lawn green - keep it green and also be better for the dirt (it even states it better controls thatch) i figured its worth a shot. the n-p-k numbers of dr. earth (9-3-8) - was roughly 1/2 of the synthetic, and with fertilizing each month regardless of summer heat, my lawn would get roughly the same amount of nutrients, on a more consistent basis. AND if its better for the lawn, its win-win again.
i started applying dr. earth on my lawn in february - and spread it after every mowing - way more than suggested - but its natural and i wanted to get the lawn/soil a boost with the natural fertilizer and mycorrhizae, in hopes we can roll through the summer - and build a base of natural fertilization, which would get me to a once a month application.
its now mid april and the lawn appears as green as the old fertilizer made it and if the roots of the lawn respond to dr. earth - like my tomatoes did last year, i might even see a decrease in watering needs - which is not bad at all (really) summer watering for me is usually 2 times per week, 15 minutes each time - with the 15 minutes busted into 3 each, 5 minute patterns on the water days - to allow zero run-off.
will keep you posted on the progress of this too.